The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 11, 1987
Filed:
Jun. 19, 1986
George J Samuels, Syracuse, NY (US);
Joseph M Garman, Williamsville, NY (US);
Allied Corporation, Morris Township, Morris County, NJ (US);
Abstract
An improved method of manufacturing printed circuit boards of the type in which a metal clad substrate is covered with a photoresist, the photoresist is masked with a predetermined circuit image, the photoresist is exposed and the exposed photoresist is removed to provide a circuit image on the surface of the metal, the circuit image is electroplated with a metallic etch resist and the remaining photoresist and exposed metal cladding is removed to provide a board having a metal circuit covered by a metallic etch resist, the improvement comprising a metallic etch resist composed of a nickel/indium alloy containing from about 0.1 to about 10 weight percent indium based on the total weight of the alloy.